CN217470274U - speaker system - Google Patents

Abstract

A speaker system, comprising: an audio signal module for outputting audio signals; a moving coil assembly module, coupled to the audio signal module, and used for receiving audio signals; and a piezoelectric assembly module, coupled to the audio signal module, and connected to the moving coil in series The component module is used to receive audio signals. In order to avoid the problem of asynchrony of audio signals, the moving coil component module and the piezoelectric component module are connected in series.

Description

speaker system

technical field

The utility model relates to a loudspeaker system structure, in particular to a loudspeaker system structure used by connecting a moving coil loudspeaker and a piezoelectric loudspeaker in series.

Background technique

In the current technology of the speaker system, since the voltage of the input signal required by the moving coil speaker and the piezoelectric speaker is different, when the moving coil speaker and the piezoelectric speaker are used in the same speaker system, it is often necessary to After the audio signal is decoded, signal processing is performed on the moving coil speaker and the piezoelectric speaker respectively (for example, amplifying the signal through an amplifier circuit, etc.), and then the processed audio signal is provided to the moving coil speaker and the piezoelectric speaker respectively. However, since the signals are processed separately, when the signal processing methods are different, it is very likely that the audio signals will be out of sync due to the different signal processing methods.

In addition, the piezoelectric speaker (capacitive load) will present a low-impedance load state (approximately short-circuit) when a high-frequency signal is input. Therefore, in the current technology, in order to prevent the amplifier circuit from outputting high-frequency signals to the voltage When there is a short circuit problem in the electric speaker, a resistor will be connected in series between the output end of the amplifier circuit and the piezoelectric speaker. However, although the use of resistors can directly and effectively avoid short circuits at the output of the amplifier circuit, the use of higher impedance resistors will reduce the bandwidth of the frequency response and consume too much output power in the resistors, while using lower impedance resistors In addition, the output power consumption at high frequencies will be too high or even damage the amplifier circuit. Therefore, it is necessary to select a suitable resistor to achieve a balance between the frequency response bandwidth and output power. The piezoelectric speaker is used in the current speaker. in the system.

Utility model content

In view of this, the present invention provides a loudspeaker system, so that the piezoelectric component module of the loudspeaker system of the present invention can be connected without series resistance, and by connecting the moving coil component module and the piezoelectric component module in series, the audio signal is avoided. The problem of asynchronous, and impedance matching can be carried out through the moving coil component module and the piezoelectric component module, without additional consumption of output power on the resistance, the output power is directly provided to the sound-emitting component in the speaker system (that is, in the present utility model). The moving coil component module and the piezoelectric component module).

The speaker system provided by the utility model includes: an audio signal module for outputting audio signals; a moving coil assembly module, which is coupled to the audio signal module and used for receiving audio signals; and a piezoelectric assembly module, which is coupled to the audio signal module and is connected in series Connect to the moving coil component module and use it to receive audio signals.

In an embodiment of the present invention, the above-mentioned moving coil assembly module of the speaker system includes a plurality of moving coil assemblies, and the plurality of moving coil assemblies are connected to each other in series or in parallel.

In an embodiment of the present invention, the above-mentioned piezoelectric component module of the speaker system includes a plurality of piezoelectric components, and the plurality of piezoelectric components are connected to each other in series or in parallel.

In an embodiment of the present invention, the audio signal module of the speaker system described above includes an audio signal codec and an amplifier circuit.

In an embodiment of the present invention, the above-mentioned speaker system further includes: a switch, coupled to the audio signal module and the moving coil assembly module, for switching the output path of the audio signal.

In an embodiment of the present invention, the above-mentioned speaker system further includes: a plurality of switching switches, coupled to the audio signal module and the moving coil assembly module, for switching the output path of the audio signal.

In an embodiment of the present invention, the above-mentioned switch of the speaker system is a single-axis double-cut switch.

In an embodiment of the present invention, the moving coil assembly module and the piezoelectric assembly module of the speaker system synchronously play the sound corresponding to the audio signal.

To sum up, the speaker system of the present invention can avoid the problem of asynchrony of audio signals by connecting the moving coil component module and the piezoelectric component module in series. In addition, compared with the conventional speaker system, the present invention The new speaker system also has the technical effect that the output power can be directly supplied to the sound-generating components in the speaker system without consuming additional output power on the resistor.

The above description is only an overview of the technical solution of the present invention, in order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the contents of the description, and in order to make the above-mentioned and other purposes, features and advantages of the present invention better. It is obvious and easy to understand. The preferred embodiments are given below, and the detailed description is as follows in conjunction with the accompanying drawings.

Description of drawings

1 is a system block diagram of a speaker system provided by an embodiment of the present invention;

FIG. 2 is a system block diagram of a speaker system provided by another embodiment of the present invention; and

FIG. 3 is a system block diagram of a speaker system provided by another embodiment of the present invention.

Detailed ways

Please refer to FIG. 1 , which is a system block diagram of a speaker system provided by an embodiment of the present invention.

In this embodiment, the speaker system 1 of the present invention includes: an audio signal module 11, a moving coil assembly module 12, and a piezoelectric assembly module 13; wherein, the audio signal module 11 is connected to the moving coil assembly module 12, and the piezoelectric assembly module 13 is connected to the moving coil assembly module 12 and the audio signal module 11 .

In this embodiment, the speaker system 1 of the present invention outputs the audio signal through the audio signal module 11, and receives the audio signal from the moving coil assembly module 12 and the piezoelectric assembly module 13 connected in series, and then the moving coil assembly module 12 and the piezoelectric assembly module 13 receive the audio signal. The piezoelectric component module 13 synchronously plays the sound corresponding to the audio signal output by the audio signal module 11 .

In this embodiment, the audio signal module 11 of the speaker system 1 of the present invention includes an audio signal codec 111 and an amplifying circuit 112 , wherein the amplifying circuit 112 includes an output terminal 1121 . The audio signal module 11 of the speaker system 1 of the present invention is connected to the moving coil assembly module 12 and the piezoelectric assembly module 13, and is used for outputting audio signals. For example, the audio signal module 11 can encode or decode the audio source of the external device from an external device such as a computer, a mobile phone, etc. that can provide an audio source through the audio signal codec 111, and convert the audio source of the external device into a voltage signal (for example, a voltage signal available for the speaker system 1). The digital audio signal can be converted into an analog audio signal, and then the analog audio signal is provided in the speaker system 1), and then the converted voltage signal is passed through the amplifying circuit 112, through the output contact A of the output terminal 1121 (for example, the positive value of the output voltage). terminal, but it can also be the negative terminal of the output voltage, corresponding to the relative polarity of the output contact B) and the output contact B (such as the negative terminal of the output voltage, but it can also be the positive terminal of the output voltage, corresponding to the output contact A Relative polarity), output the audio signal to the moving coil assembly module 12 and the piezoelectric assembly module 13, so that the moving coil assembly module 12 and the piezoelectric assembly module 13 synchronously play the sound corresponding to the audio signal output by the audio signal module 11. In this embodiment, although the audio signal module 11 includes an audio signal codec 111 and an amplifying circuit 112, the present invention is not limited to this, and the audio signal module 11 may also not include an audio signal codec and/or amplifying circuit Any circuit, as long as it can output audio signals enough to drive the series-connected moving coil component modules and piezoelectric component modules, can be used as the audio signal module of the speaker system of the present invention. In this embodiment, although the output contact A and the output contact B of the output terminal 1121 are arranged in the amplifier circuit 112, as long as the output is capable of outputting audio signals sufficient to drive the series-connected moving coil module and piezoelectric module The contacts can be used as the output contact A and/or the output contact B of the speaker system of the present invention, and the present invention is not limited to this.

In this embodiment, the moving coil component module 12 included in the speaker system 1 of the present invention is connected to the audio signal module 11 through the output contact A of the output end 1121 , and is connected to the piezoelectric component module 13 in series, and is used to receive the audio signal module 11 output audio signal. In this embodiment, the load characteristic of the moving coil assembly module 12 is a resistive load (or close to a resistive load. Generally speaking, the resistance value of each moving coil assembly is about 3Ω to 16Ω, but the present invention without limitation), and may include one or more moving coil components (eg, moving coil speakers). For example, in the case of multiple moving coil assemblies, the moving coil assemblies can be connected to each other by means of series or parallel connection to form the moving coil assembly module 12 of this embodiment, and the A moving coil component, or multiple moving coil components in series or parallel, do impedance matching according to the capacitance value of the piezoelectric component module 13 (capacitive load), adjust the impedance of the speaker system 1, and output high frequency in the amplifier circuit 112. When there is an audio signal (such as an audio signal with a frequency above 5kHz), connecting the moving coil component module 12 to the piezoelectric component module 13 in series can ensure that the amplifier circuit 112 will not be affected by the load characteristics of the piezoelectric component module 13 (capacitive load, capacitance When the high-frequency signal is given to the high-frequency signal, the load characteristic is low impedance), resulting in a short circuit phenomenon (or the current value is too high) when the high-frequency audio signal is output, thereby causing the problem of damage to the amplifier circuit 112, and Different from the conventional loudspeaker system, the structure of the loudspeaker system 1 of the present invention can not only avoid the use of resistors, but also does not need to consume additional output power on the resistors, and the output power can be directly provided to the sound-emitting components ( In the present invention, it is the moving coil assembly module 12 and the piezoelectric assembly module 13). In addition to adjusting the power consumption of the speaker system 1 suitable for the present invention, it is also capable of avoiding the occurrence of the moving coil assembly in the conventional speaker system. The technical effect of the problem that the audio signals of the module 12 and the piezoelectric component module 13 are not synchronized.

In this embodiment, the piezoelectric component module 13 included in the speaker system 1 of the present invention is connected to the audio signal module 11 through the output contact B of the output end 1121 , and is connected to the moving coil component module 12 in series, and is used to receive the audio signal module 11 output audio signal. In this embodiment, the load characteristic of the piezoelectric component module 13 is a capacitive load, and may include one or more piezoelectric components (eg, piezoelectric speakers), for example, in the case of multiple piezoelectric components , the piezoelectric components can be connected to each other by means of series or parallel connection to form the piezoelectric component module 13 of this embodiment, and a piezoelectric component, or a series or parallel connection of a plurality of piezoelectric components In the way of electrical components, the capacitance value of the piezoelectric component module 13 is adjusted and impedance matching is performed with the moving coil component module 12 (resistive load) to adjust the impedance of the speaker system 1 .

Next, please refer to FIG. 2 , which is a system block diagram of a speaker system provided by another embodiment of the present invention.

In this embodiment, the speaker system 1 ′ of the present invention includes: an audio signal module 11 , a moving coil assembly module 12 , a piezoelectric assembly module 13 , and a switch 14 ; wherein the audio signal module 11 is connected and switched via the output contact A The switch 14, the switch 14 is connected to the moving coil assembly module 12 in parallel, the piezoelectric assembly module 13 is connected to the moving coil assembly module 12 in series, the switch 14 is connected, and the audio signal module 11 is connected via the output contact B.

In this embodiment, the functions of the audio signal module 11 , the moving coil assembly module 12 , and the piezoelectric assembly module 13 of the speaker system 1 ′ of the present invention are the same as those in the previous embodiment, and will not be repeated here, but only for this embodiment. The components in the example whose connection relationship and/or function are different from those in the foregoing embodiments will be described.

In this embodiment, the switch 14 included in the speaker system 1 ′ of the present invention is connected to the output contact A of the audio signal module 11 , connected in parallel to the moving coil assembly module 12 , and connected to the piezoelectric assembly module 13 for switching the audio signal The output path of the audio signal output by the module 11 .

For example, as shown in FIG. 2 , the switch 14 can be, for example, a single-axis double-cut switch (Single Pole Double Throw, SPDT), and is connected to the output terminal 1121 by the common contact (Common, usually represented by COM) of the switch 14 The output contact A (in this embodiment, the output contact A is an example of the positive output voltage, but the present invention is not limited to this), and a normally closed contact (Normally Closed, usually represented by N/C) is connected to the moving coil assembly module The first end of the moving coil assembly module of 12 is connected to the second end of the moving coil assembly module of the moving coil assembly module 12 and the piezoelectric The first end of the component module.

When the state of the switch 14 is not switched (that is, the path of the normally closed contact), the output path of the audio signal output by the audio signal module 11 is as follows: "output contact A (positive output voltage)" → "switch 14" →“Moving coil component module 12”→“Piezoelectric component module 13”→“Output contact B (output voltage negative pole)”; and in the case of switching the state of the switch 14 (that is, the path of the normally open contact), the audio The output path of the audio signal output by the signal module 11 is as follows: "output contact A (positive output voltage)" → "switch 14" → "piezoelectric component module 13" → "output contact B (output voltage negative)"; that is, In other words, the switch 14 can switch the output path of the audio signal output by the audio signal module 11 by connecting the moving coil assembly modules 12 in parallel in a short-circuit manner.

In this embodiment, although the output contact A is the positive output voltage and the output contact B is the negative output voltage as an example, the present invention is not limited to this, that is to say, the output contact A can also be used as the output voltage The negative pole and the output contact B are implemented as the positive pole of the output voltage. When the state of the switch 14 is not switched (that is, the path of the normally closed contact), the output path of the audio signal output by the audio signal module 11 is as follows: "Output contact A (output voltage negative pole)" → "changeover switch 14" → "moving coil module 12" → "piezoelectric module 13" → "output contact B (output voltage positive pole)"; when the state of the changeover switch 14 is switched Down (that is, the path of the normally open contact), the output path of the audio signal output by the audio signal module 11 is as follows: "output contact A (output voltage negative)" → "switch 14" → "piezoelectric component module 13" → " Output contact B (positive output voltage)".

The switch 14 of the speaker system 1' of the present invention can switch the output path of the audio signal output by the audio signal module 11 according to the needs of the user. For example, the user can switch different output paths successively, and after listening to music, select an output path suitable for the music (ie "whether to enable the moving coil component module 12"). In another embodiment, the switch 14 can be used to connect the piezoelectric component modules 13 in parallel in the same manner to select and switch "whether to enable the piezoelectric component modules 13" (not shown). In one embodiment, a plurality of switch switches 14 can be used to switch the output path of the audio signal output by the audio signal module 11 . Select to switch "whether to enable part of the moving coil components in the moving coil component module 12" (not shown) to switch the output path of the audio signal output by the audio signal module 11.

In the present invention, although the switch 14 is a single-axis double-cut switch (Single Pole DoubleThrow, SPDT) as an example, the switch 14 of the present invention is not limited to the switch type of the single-axis double-cut switch. In a short-circuit manner, switches that switch the output path of the audio signal output by the audio signal module 11 by connecting the moving coil assembly module 12 in parallel can be used as the switch 14 of the present invention. The type of the switch of the present invention is not limited to: The switch types listed are limited.

Next, please refer to FIG. 3 , which is a system block diagram of a speaker system provided by another embodiment of the present invention.

In this embodiment, the speaker system 1" of the present invention includes: an audio signal module 11, a moving coil assembly module 12, a piezoelectric assembly module 13, and a switch 14; wherein, the audio signal module 11 is connected to the voltage through the output contact A. The electrical component module 13, the piezoelectric component module 13 is connected to the switch 14, the switch 14 is connected to the moving coil component module 12 in parallel, the moving coil component module 12 is connected to the piezoelectric component module 13 in series, and is connected to the audio signal module 11 through the output contact B.

In this embodiment, the functions of the audio signal module 11 , the moving coil assembly module 12 , the piezoelectric assembly module 13 , and the switch 14 of the speaker system 1 ″ of the present invention are the same as those in the previous embodiment, and will not be repeated here. , and only components whose connection relationships and/or functions in this embodiment are different from those in the preceding embodiments will be described.

In this embodiment, the difference between the speaker system 1 ″ of the present invention and the previous embodiments lies in the connection mode of the switch 14 . As shown in FIG. The first end of the electrical component module, the second end of the piezoelectric component module of the piezoelectric component module 13 is connected to the common contact of the switch 14, the normally closed contact of the switch 14 is connected to the first end of the moving coil component module of the moving coil component module 12, The normally open contact of the switch 14 is connected to the second end of the moving coil assembly module of the moving coil assembly module 12, and the second end of the moving coil assembly module of the moving coil assembly module 12 is connected to the output contact B of the output end 1121. This embodiment provides another A connection method of the switch 14, the operation and functional principle of this connection method is the same as that of the foregoing embodiment, so the description of the functional principle will not be repeated.

To sum up, the speaker system of the present invention can avoid the problem of asynchrony of audio signals by connecting the moving coil component module and the piezoelectric component module in series. In addition, compared with the conventional speaker system, the present invention The new speaker system also has the technical effect that the output power can be directly supplied to the sound-generating components in the speaker system without consuming additional output power on the resistor.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Those skilled in the art, without departing from the scope of the technical solution of the present invention, can make some changes or modifications to equivalent examples of equivalent changes by using the methods and technical contents disclosed above, provided that they do not depart from the present invention. The content of the new technical solution, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims (8)

1. A speaker system, comprising:

an audio signal module for outputting an audio signal;

a moving coil module coupled to the audio signal module for receiving the audio signal; and

and the piezoelectric component module is coupled with the audio signal module, is connected with the moving coil component module in series and is used for receiving the audio signal.

2. The speaker system of claim 1, wherein the moving coil assembly module comprises:

a plurality of moving coil assemblies connected to each other in series or in parallel.

3. The speaker system of claim 1, wherein the piezoelectric element module comprises:

a plurality of piezoelectric elements connected to each other in series or in parallel.

4. The speaker system of claim 1, wherein the audio signal module comprises an audio signal codec and an amplification circuit.

5. The speaker system of claim 1, further comprising:

a switch coupled to the audio signal module and the moving coil module for switching the output path of the audio signal.

6. The speaker system of claim 1, further comprising:

and a plurality of switches coupled to the audio signal module and the moving coil module for switching the output path of the audio signal.

7. A loudspeaker system according to claim 5 or 6, wherein the switch is a single-axis double-switch.

8. The speaker system of claim 1, wherein the moving coil module and the piezoelectric module synchronously play sound corresponding to the audio signal.

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